I had an E40D go bad 4 years ago and the shop I went to said I had 3 choices. A rebuild thru him $1,800.00 w/ 1 year waranty at his shop.
Option 2 a new Ford factory trans for $2,100.00 with 1 year warrantee.
or the 3rd option and the one I chose-a Jasper trans with a nationwide warrantee w/ 3 years or 75K miles for $2,300.
Here is why I chose option 3-Warranty-nationwide warranty-and at 2 years 11 months and 19 days it blew a front seal and Jasper decided to replace the trans at no cost or deductible... Warranty!!!!!
PS You can contact Jasper on line and locate a dealer.